Sure but it doesn't need to know everything.

It doesn't need to know different languages, every programming lanuage and co.

We will for sure get to this in the comming years. After all they will have to start finetuning their traning data anyway

Only if you're going after the "vibe coders" audience. Regular developers would be fine with a lightweight local llm capable of scaffolding and wiring a dozen of bog-standard components in a few lines of natural language.